<template>
  <el-dialog
    v-el-drag-dialog
    :close-on-click-modal="false"
    :title="title"
    :type="type"
    :visible.sync="isVisible"
    :width="width"
    top="50px"
    @dragDialog="handleDrag"
  >
    <el-form
      ref="form"
      :model="attachment"
      :rules="rules"
      label-position="right"
      label-width="100px"
    >
      <el-form-item :label="$t('table.attachment.bizId')" prop="bizId">
        <el-input v-model="attachment.bizId" />
      </el-form-item>

      <el-form-item :label="$t('table.attachment.bizType')" prop="bizType">
        <el-input v-model="attachment.bizType" />
      </el-form-item>
      <el-form-item label="文件" prop="fileLength">
        <fileUpload
          ref="fileRef"
          :accept-size="2*1024*1024"
          :auto-upload="false"
          :limit="5"
          @fileLengthVaild="fileLengthVaild"
          @setId="setIdAndSubmit"
        >
          <el-button slot="trigger" size="small" type="primary">选取文件</el-button>
          <div slot="tip" class="el-upload__tip">文件不超过2MB</div>
        </fileUpload>
      </el-form-item>
    </el-form>
    <div slot="footer" class="dialog-footer">
      <el-button plain type="warning" @click="isVisible = false">{{ $t('common.cancel') }}</el-button>
      <el-button
        :disabled="disabled"
        plain
        type="primary"
        @click="submitForm"
      >{{ $t('common.confirm') }}</el-button>
    </div>
  </el-dialog>
</template>
<script>
import elDragDialog from '@/directive/el-drag-dialog'
import fileUpload from '@/components/pinda/fileUpload'

export default {
  name: 'AttachmentEdit',
  directives: { elDragDialog, fileUpload },
  components: { fileUpload },
  props: {
    dialogVisible: {
      type: Boolean,
      default: false
    },
    type: {
      type: String,
      default: 'add'
    }
  },
  data() {
    return {
      accept: 'image/jpeg, image/gif, image/png',
      attachment: this.initAttachment(),
      screenWidth: 0,
      width: this.initWidth(),
      fileLength: 0,
      disabled: false,
      rules: {
        bizType: [
          {
            required: true,
            message: this.$t('rules.require'),
            trigger: 'blur'
          },
          {
            min: 0,
            max: 255,
            message: this.$t('rules.range0to255'),
            trigger: 'blur'
          }
        ],
        bizId: {
          min: 0,
          max: 255,
          message: this.$t('rules.range0to255'),
          trigger: 'blur'
        },
        fileLength: {
          required: true,
          trigger: 'change',
          validator: (rule, value, callback) => {
            const vm = this
            if (vm.fileLength === 0) {
              callback(new Error('请上传文件'))
            } else if (vm.fileLength > 5) {
              callback(new Error('一次性只能上传5个文件'))
            } else {
              callback()
            }
          }
        }
      }
    }
  },
  computed: {
    isVisible: {
      get() {
        return this.dialogVisible
      },
      set() {
        this.close()
        this.reset()
      }
    },
    title() {
      return this.$t('common.upload')
    }
  },
  watch: {},
  mounted() {
    window.onresize = () => {
      return (() => {
        this.width = this.initWidth()
      })()
    }
  },
  methods: {
    initAttachment() {
      return {
        id: '',
        bizId: '',
        bizType: '',
        file: null,
        isSingle: false
      }
    },
    handleDrag() {
      console.log(`我被拖动了`)
    },
    // 附件长度校验
    fileLengthVaild(data) {
      const vm = this
      vm.fileLength = data || 0
    },
    initWidth() {
      this.screenWidth = document.body.clientWidth
      if (this.screenWidth < 991) {
        return '90%'
      } else if (this.screenWidth < 1400) {
        return '45%'
      } else {
        return '800px'
      }
    },
    setAttachment(val) {
      const vm = this
      if (val) {
        vm.attachment = { ...val }
      }
    },
    close() {
      this.$emit('close')
    },
    reset() {
      // 先清除校验，再清除表单，不然有奇怪的bug
      this.$refs.form.clearValidate()
      this.$refs.form.resetFields()
      this.attachment = this.initAttachment()
      this.$refs.fileRef.init({
        id: '',
        bizId: '',
        bizType: ''
      })
    },
    submitForm() {
      const vm = this
      this.$refs.form.validate(valid => {
        if (valid) {
          vm.editSubmit()
        } else {
          return false
        }
      })
    },
    editSubmit() {
      const vm = this
      vm.disabled = true
      vm.$refs.fileRef.submitFile(
        this.attachment.id,
        this.attachment.bizId,
        this.attachment.bizType
      )
    },
    setIdAndSubmit(isUploadCompleted) {
      const vm = this
      if (isUploadCompleted) {
        vm.disabled = false
        vm.isVisible = false
        vm.$message({
          message: vm.$t('tips.createSuccess'),
          type: 'success'
        })
        vm.$emit('success')
      }
    }
  }
}
</script>
<style lang="scss" scoped>
</style>
